The liquid seeping into the fibers of her bra self "tasted" a bit sweet.
'Wow, Verde-san can lactate. She already seems like such a mommy~' Honoka pressed her body closer to Emma's breasts, trying to soak in as much milk as she could.
As she entered her school, Emma felt like her bra was a bit tight. Emma lightly tugged on her straps to adjust for comfort. "Hmm, I might need to get a new one..."
"A new what?" Karin's sultry voiced echoed in Emma's ear as her lover nibbled at her neck.
"A-a new bra, Karin. This one's getting tight..."
"I'm not surprised with how big your mommy milkers are getting." Karin teasingly remarked, loving how big her girlfriend's breasts were. The two of them made their way to a private part of the school and started making out. As the two of them made out, Karin got her hands underneath Emma's blouse and right over Honoka's body, now Emma's bra.
Honoka could only watch and feel as she was an unintended passenger in this intimate moment between the sexy mature Onee-sans, Emma and Karin. She wasn't disgusted or freaked out, merely impressed at the whole situation.
'Wow, Asaka-san is really good at groping tiddies.' she mused.
Groping Emma so much also meant that more milk poured out from Emma's nipples, making Honoka's silky bra body good and damp.
Eventually, after a few minutes, the morning bell rang, breaking the two of them apart. "Time to get to class, Emma."
Emma giggled as she took Karin's hand and walked to class, paying little attention to how wet and tight her bra felt.
Honoka got to enjoy the rest of the day being Emma's bra. There was a lot to enjoy about it, from Emma opening up her blouse and drying her bra in front of a fan that made Emma's nipples hard, to another long make-out session with Karin, complete with Karin licking all over Emma's breasts.
Eventually, though, the fun had to end as Emma got into her dorm room and took off her bra, which quickly turned Honoka back to normal. Thanks to the magic, everyone affected thought this kind of thing was normal.
"Ah, were you my bra today, Honoka-chan?"
"Y-yeah, it was lots of fun and really sexy! You gave me some good tips the next time I make out with Tsubasa~" The girls giggled and said their goodbyes as Honoka left, uncaring that she spent the day as a pair of underwear.